阅读说明：本技术 一种新型自带花纹的胎面胶及其制备方法 (Novel tread rubber with patterns and preparation method thereof ) 是由 毛春昱 王显峰 刘松青 张卫东 于 2019-12-16 设计创作，主要内容包括：本发明涉及汽车轮胎技术领域,尤其是一种新型自带花纹的胎面胶,包括抗湿滑发泡橡胶单元、高耐磨橡胶单元和抗撕裂橡胶单元,所述抗湿滑发泡橡胶单元和高耐磨橡胶单元互补,所述抗撕裂橡胶单元位于抗湿滑发泡橡胶单元和高耐磨橡胶单元的底部,所述抗湿滑发泡橡胶单元嵌设在所述高耐磨橡胶单元内形成花纹,所述抗湿滑发泡橡胶单元形成的花纹包括镜像对称的第一花纹结构和第二花纹结构,第一花纹结构包括条状花纹结构和仿生花纹结构,所述条状花纹结构和仿生花纹结构通过主沟槽分隔开。本发明制造方便,不但具有超高的抗湿滑性能,同时也保证了良好的耐磨性能、滚动阻力和其他各项物理机械等性能,能够大大提高汽车行驶的安全性。(The invention relates to the technical field of automobile tires, in particular to a novel tread rubber with patterns, which comprises a wet-skid resistant foamed rubber unit, a high-wear-resistant rubber unit and a tear-resistant rubber unit, wherein the wet-skid resistant foamed rubber unit is complementary with the high-wear-resistant rubber unit, the tear-resistant rubber unit is positioned at the bottoms of the wet-skid resistant foamed rubber unit and the high-wear-resistant rubber unit, the wet-skid resistant foamed rubber unit is embedded in the high-wear-resistant rubber unit to form patterns, the patterns formed by the wet-skid resistant foamed rubber unit comprise a first pattern structure and a second pattern structure which are in mirror symmetry, the first pattern structure comprises a strip-shaped pattern structure and a bionic pattern structure, and the strip-shaped pattern structure and the bionic pattern structure are separated by a main groove. The invention is convenient to manufacture, not only has ultrahigh wet skid resistance, but also ensures good wear resistance, rolling resistance and other physical and mechanical properties, and can greatly improve the driving safety of the automobile.)

1. The utility model provides a novel tread rubber from area decorative pattern, a serial communication port, including anti wet and slippery foam rubber unit, high wear-resisting rubber unit and tear rubber unit, anti wet and slippery foam rubber unit and high wear-resisting rubber unit are complementary, tear rubber unit is located the bottom of anti wet and slippery foam rubber unit and high wear-resisting rubber unit, anti wet and slippery foam rubber unit inlays to be established form the decorative pattern in the high wear-resisting rubber unit, the decorative pattern that anti wet and slippery foam rubber unit formed includes mirror symmetry's first decorative pattern structure and second decorative pattern structure, and first decorative pattern structure includes strip decorative pattern structure and bionical decorative pattern structure, strip decorative pattern structure and bionical decorative pattern structure are separated through the main slot.

2. The novel tread rubber with patterns according to claim 1, wherein the anti-wet-skid foamed rubber unit comprises the following components in parts by weight: 100 parts of (A); carbon black N220: 20-50 parts; stearic acid: 2-8 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 4-10 parts; foaming agent: 4-8 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts;

the high-wear-resistance rubber unit comprises the following components in parts by weight: 100 parts of (A); high wear-resistant carbon black: 20-40 parts; white carbon black: 15-30 parts; silane coupling agent: 1.5-3 parts; stearic acid: 3-5 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 2-6 parts; high wear-resistant material: 2-6 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts;

the tear-resistant rubber unit comprises the following components in parts by weight: 100 parts of (A); carbon black N330: 20-40 parts; white carbon black: 15-30 parts; silane coupling agent: 1.5-3 parts; stearic acid: 3-5 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 2-6 parts; tear-resistant materials: 2-6 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts.

3. The novel tread rubber with patterns as claimed in claim 1, wherein the first pattern structure and the second pattern structure take a central groove as a symmetry axis, the stripe pattern structure comprises a central circular node, two sides of the central circular node are respectively connected with a main groove and the central groove through two symmetrical auxiliary grooves, at least one side circular node is arranged on the auxiliary groove, the auxiliary grooves on two sides of the central circular node form a certain angle, and the distance between the central groove and the main grooves on two sides is equal to 100-200 mm; the width of the main groove is the same as that of the central groove and is 10-20 mm; the radius of the central circular node is 6-10mm, and the radius of the side circular node is 3-6 mm; the width of the auxiliary groove is 6-12mm, and the length of the auxiliary groove between the central circular node and the side circular node is 15-30 mm;

the auxiliary grooves on the same side of the central circular node are parallel to each other, and the distance between two adjacent auxiliary grooves on the same side of the central circular node is equal to 30-60 mm; the total length of the auxiliary groove is 60-120 mm; the included angle between the auxiliary groove and the main groove is 30-60 degrees.

4. The novel tread rubber with patterns of claim 3, wherein the auxiliary grooves extend outwards after passing through the main grooves to form a plurality of parallel lines, the bionic pattern structure comprises a plurality of cat-claw-shaped patterns, the cat-claw-shaped patterns are uniformly distributed in the parallel lines, and the cat-claw-shaped patterns consist of a central ellipse and four identical auxiliary ellipses; the long side of the central ellipse is 10-20mm, and the short side is 5-10 mm; the long side of the auxiliary ellipse is 6-12mm, and the short side is 4-8 mm; the four auxiliary ellipses are uniformly distributed above the central ellipse, and the distances between the centers of the four auxiliary ellipses and the center of the central ellipse are equal and are 15-30 mm; the distance between the centers of two adjacent auxiliary ellipses is equal and is 10-20 mm; the included angle between the center of the first auxiliary ellipse on the left side and the long side of the central ellipse is 20-60 degrees.

5. The novel tread rubber with patterns as claimed in claim 2, wherein the high abrasion rubber unit is composed of nitrile rubber and butadiene rubber, and the nitrile rubber is NBR-4020D and the butadiene rubber is BR9100, wherein the nitrile rubber is 20-30% of the total mass and the butadiene rubber is 70-80% of the total mass.

6. The novel tread band with self-tread pattern as claimed in claim 2, wherein said high wear resistant material is composed of silicon nitride and aluminum oxide, and the silicon nitride is Si3N4 and the aluminum oxide is AL2O3, wherein the silicon nitride is 13-23% of the total mass and the aluminum oxide is 77-87% of the total mass.

7. The novel tread band with self-tread pattern as claimed in claim 2, wherein the tear-resistant rubber unit is composed of natural rubber and butadiene rubber at a mass ratio of 15: 1.

8. The novel tread rubber with patterns of claim 2, wherein the tear-resistant material is composed of aramid fibers and carbon fibers, the length of the tear-resistant material is 20-30mm, and the mass ratio of the aramid fibers to the carbon fibers is 20: 1.

9. A method for preparing a novel tread rubber with patterns, which is used for preparing the novel tread rubber with the patterns of any one of claims 1 to 8, and is characterized by comprising the following steps:

the first step, the preparation of the anti-slippery foam rubber unit, controlling the rotor speed of the internal mixer to be 40-80RPM, the temperature to be 130-150 ℃ and the upper plug pressure to be 30-50N/CM2, the concrete process comprises the following steps:

(1) adding foamed rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant, the sulfur and the foaming agent, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 5-10mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

Secondly, preparing a high-abrasion-resistance rubber unit, controlling the rotor speed of the internal mixer to be 40-80RPM, the temperature to be 130-:

(1) adding wear-resistant rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant and the sulfur, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 5-10mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

Thirdly, preparing a tear-resistant rubber unit, controlling the rotor speed of the internal mixer to be 40-80RPM, the temperature to be 130-:

(1) adding tear-resistant rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant and the sulfur, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 2-6mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

And step four, the anti-slippery foam rubber, the high-abrasion-resistance rubber and the anti-tearing rubber prepared in the steps one, two and three are combined in a compression molding mode according to the respective structural shapes, then the rubber is added into a mold to be pressurized to 5-20MP and heated to 130-150 ℃, and after 10-30 minutes, the rubber is cooled by water for 30 minutes to complete the preparation.

Technical Field

The invention relates to the technical field of automobile tires, in particular to novel tread rubber with patterns and a preparation method thereof.

Background

Tires are important components of automobiles and are the most important products of the rubber industry. The wet skid resistance of the tire is the main performance of the tread rubber of the tire, and the quality of the tread rubber is the main factor for ensuring the driving safety of the automobile, which is more important particularly in rainy and snowy days. However, the wet skid resistance tends to be contradictory to the wear resistance of the tread rubber, and the wear resistance tends to be lowered while the wet skid resistance of the tire is improved. This is also a difficult point to be researched by researchers. The wear resistance is ensured, and the wet skid resistance of the tread rubber is improved, so that the life and property safety of people is protected.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a novel tread rubber with patterns.

In order to achieve the purpose, the invention adopts the following technical scheme:

a novel tread rubber with patterns comprises a wet-skid resistant foamed rubber unit, a high-wear-resistance rubber unit and a tear-resistant rubber unit, wherein the wet-skid resistant foamed rubber unit is complementary with the high-wear-resistance rubber unit, the tear-resistant rubber unit is positioned at the bottoms of the wet-skid resistant foamed rubber unit and the high-wear-resistance rubber unit, and the wet-skid resistant foamed rubber unit is embedded in the high-wear-resistance rubber unit to form the patterns; the decorative pattern that anti wet and slippery foam rubber unit formed includes mirror symmetry's first decorative pattern structure and second decorative pattern structure, and first decorative pattern structure includes strip decorative pattern structure and bionical decorative pattern structure, strip decorative pattern structure and bionical decorative pattern structure separate through the main slot, and strip decorative pattern structure and bionical decorative pattern structure make up according to certain network structure.

Further, the anti-slippery foam rubber unit comprises the following components in parts by weight: 100 parts of (A); carbon black N220: 20-50 parts; stearic acid: 2-8 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 4-10 parts; foaming agent: 4-8 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts;

the high-wear-resistance rubber unit comprises the following components in parts by weight: 100 parts of (A); high wear-resistant carbon black: 20-40 parts; white carbon black: 15-30 parts; silane coupling agent: 1.5-3 parts; stearic acid: 3-5 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 2-6 parts; high wear-resistant material: 2-6 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts;

the tear-resistant rubber unit comprises the following components in parts by weight: 100 parts of (A); carbon black N330: 20-40 parts; white carbon black: 15-30 parts; silane coupling agent: 1.5-3 parts; stearic acid: 3-5 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 2-6 parts; tear-resistant materials: 2-6 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts.

Furthermore, the first pattern structure and the second pattern structure use a central groove as a symmetry axis, the strip-shaped pattern structure comprises a central circular node, two sides of the central circular node are respectively connected with the main groove and the central groove through two symmetrical auxiliary grooves, the auxiliary grooves are provided with at least one side circular node, the auxiliary grooves on two sides of the central circular node form a certain angle, and the distances between the central groove and the main grooves on two sides are equal and are 100-200 mm; the width of the main groove is the same as that of the central groove and is 10-20 mm; the radius of the central circular node is 6-10mm, and the radius of the side circular node is 3-6 mm; the width of the auxiliary groove is 6-12mm, and the length of the auxiliary groove between the central circular node and the side circular node is 15-30 mm;

the auxiliary grooves on the same side of the central circular node are parallel to each other, and the distance between two adjacent auxiliary grooves on the same side of the central circular node is equal to 30-60 mm; the total length of the auxiliary groove is 60-120 mm; the included angle between the auxiliary groove and the main groove is 30-60 degrees.

Furthermore, the auxiliary grooves penetrate through the main grooves and extend outwards to form a plurality of parallel grains, the bionic pattern structure comprises a plurality of cat-paw-shaped patterns, the cat-paw-shaped patterns are uniformly distributed in the parallel grains, and the cat-paw-shaped patterns consist of a central ellipse and four same auxiliary ellipses; the long side of the central ellipse is 10-20mm, and the short side is 5-10 mm; the long side of the auxiliary ellipse is 6-12mm, and the short side is 4-8 mm; the 4 auxiliary ellipses are uniformly distributed above the central ellipse, and the distances between the centers of the four auxiliary ellipses and the center of the central ellipse are equal and are 15-30 mm; the distance between the centers of two adjacent auxiliary ellipses is equal and is 10-20 mm; the included angle between the center of the first auxiliary ellipse on the left side and the long side of the central ellipse is 20-60 degrees.

Further, the high-abrasion-resistance rubber unit is composed of nitrile rubber and butadiene rubber, wherein the nitrile rubber is NBR-4020D, and the butadiene rubber is BR9100, wherein the nitrile rubber accounts for 20-30% of the total mass, and the butadiene rubber accounts for 70-80% of the total mass.

Further, the high-wear-resistance material is composed of silicon nitride and aluminum oxide, the silicon nitride is Si3N4, the aluminum oxide is AL2O3, the silicon nitride accounts for 13-23% of the total mass, and the aluminum oxide accounts for 77-87% of the total mass.

Further, the tear-resistant rubber unit is composed of natural rubber and butadiene rubber, and the mass ratio of the natural rubber to the butadiene rubber is 15: 1.

Further, the tear-resistant material is composed of aramid fiber and carbon fiber, the length of the tear-resistant material is 20-30mm, and the mass ratio of the aramid fiber to the carbon fiber is 20: 1.

A preparation method of novel tread rubber with patterns is used for preparing the novel tread rubber with the patterns, and comprises the following steps:

the first step, the preparation of the anti-slippery foam rubber unit, controlling the rotor speed of the internal mixer to be 40-80RPM, the temperature to be 130-150 ℃ and the upper plug pressure to be 30-50N/CM2, the concrete process comprises the following steps:

(1) adding foamed rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant, the sulfur and the foaming agent, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 5-10mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

Secondly, preparing a high-abrasion-resistance rubber unit, controlling the rotor speed of the internal mixer to be 40-80RPM, the temperature to be 130-:

(1) adding wear-resistant rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant and the sulfur, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 5-10mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

Thirdly, preparing a tear-resistant rubber unit, controlling the rotor speed of the internal mixer to be 40-80RPM, the temperature to be 130-:

(1) adding tear-resistant rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant and the sulfur, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 2-6mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

And step four, the anti-slippery foam rubber, the high-abrasion-resistance rubber and the anti-tearing rubber prepared in the steps one, two and three are combined in a compression molding mode according to the respective structural shapes, then the rubber is added into a mold to be pressurized to 5-20MP and heated to 130-150 ℃, and after 10-30 minutes, the rubber is cooled by water for 30 minutes to complete the preparation.

The invention provides a novel tread rubber with patterns, which has the beneficial effects that: the invention is convenient to manufacture, not only has ultrahigh wet skid resistance, but also ensures good wear resistance, rolling resistance and other physical and mechanical properties, and can greatly improve the driving safety of the automobile.

Drawings

FIG. 1 is a schematic structural view of a novel tread rubber with patterns provided by the present invention;

FIG. 2 is a schematic structural diagram of a structural pattern unit with nodes in an oval shape of a novel tread rubber with patterns provided by the present invention;

fig. 3 is a schematic structural diagram of a structural pattern unit with a circular node of the novel tread rubber with a pattern provided by the invention.

In the figure, the included angle between the center of a-1, a first pattern structure, a-11, a stripe pattern structure, a-111, a center circular node, a-112, a side circular node, a-12, a bionic pattern structure, a-121, a center ellipse, a-122, an auxiliary ellipse, a-2, a second pattern structure, B, a high-wear-resistance rubber unit, C, a tear-resistant rubber unit, D, a center groove, O, a center axis of the center groove, E, a main groove, F, an auxiliary groove, k1, a width of the center groove, k2, a width of the main groove, k3, a distance between the center groove and the main grooves on both sides, r1, a radius of the center circular node, r2, a radius of the side circle, F width of the auxiliary groove, t1, a distance between the center circular node and the side circular node, t2, a total length of the auxiliary groove, l, a distance between two adjacent auxiliary grooves, γ, an included angle between the auxiliary groove and the center groove, a1, an included angle between a center of the auxiliary groove, B638, a center of the.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the existing bionics research, the researchers at Jilin university put forward the biology non-smooth concept and the biology non-smooth wear-resisting theory at the earliest in 1990, the surface of the shell has a plurality of pit structures, and the shape of the shell is mostly approximate to an ellipse or a circle. The pit structure is proved to have good wear-resisting effect.

The structure of the shell is divided into three layers, namely a cuticle layer, a prismatic layer and a pearl layer from outside to inside, wherein the pearl layer is the strongest part. In the research on the crystal structure of the pearl layer, the aragonite single crystal in the surface layer has certain orientation. Through the observation of the appearance of the cracks, the crack deflection, fiber extraction and organic matrix bridging are found to be 3 main mechanisms for toughening the pearl layer, wherein the organic matrix plays an important role. According to the shell structure toughening mechanism, a metal/ceramic multilayer film with super-hard performance and a layered mesoporous manganese oxide high-toughness material with nano-scale are developed at present. A tear-resistant structural unit is designed according to a pearl layer of the shell, so that the tear resistance of the tread rubber is improved. Have wear-resisting pit structure in the anti wet and slippery unit in this application, promoted the wearability of anti wet and slippery.

Specifically, the novel tread rubber with the patterns comprises a wet-skid resistant foamed rubber unit A, a high-wear-resistance rubber unit B and a tear-resistant rubber unit C, wherein the wet-skid resistant foamed rubber unit A is complementary with the high-wear-resistance rubber unit B, the tear-resistant rubber unit C is positioned at the bottoms of the wet-skid resistant foamed rubber unit A and the high-wear-resistance rubber unit B, the wet-skid resistant foamed rubber unit A is embedded in the high-wear-resistance rubber unit B to form the patterns, the patterns formed by the wet-skid resistant foamed rubber unit A comprise a first pattern structure A-1 and a second pattern structure A-2 which are in mirror symmetry, the first pattern structure A-1 comprises a strip-shaped pattern structure A-11 and a bionic pattern structure A-12, the strip-shaped pattern structure A-11 and the bionic pattern structure A-12 are separated through a main groove E, the strip-shaped pattern structure A-11 and the bionic pattern structure A-12 are combined according to a certain network structure. The thickness g1 of the tear-resistant rubber unit C is 2-6mm, and the thickness g2 of the high-abrasion-resistant rubber unit B is 8-24 mm.

As shown in the figure, the first pattern structure a-1 and the second pattern structure a-2 use a central groove D as a symmetry axis, the stripe pattern structure a-11 includes a central circular node a-111, two sides of the central circular node a-111 are respectively connected with a main groove E and the central groove D through two symmetrical auxiliary grooves F, the auxiliary groove F is provided with at least one side circular node a-112, the auxiliary grooves F on two sides of the central circular node a-111 form a certain angle, and the distance k3 between the central groove D and the main grooves E on two sides is equal to 100-; the width k2 of the main groove E is 10-20mm, which is the same as the width k1 of the central groove D; the radius r1 of the central circular node A-111 is 6-10mm, and the radius r2 of the side circular node A-112 is 3-6 mm; the width F of the auxiliary groove F is 6-12mm, and the length t1 of the auxiliary groove F between the central circular node A-111 and the side circular node A-112 is 15-30 mm;

the auxiliary grooves F on the same side of the central circular node A-111 are parallel to each other, and the distance l between two adjacent auxiliary grooves F on the same side of the central circular node A-111 is equal to 30-60 mm; the total length t2 of the auxiliary groove F is 60-120 mm; the included angle gamma between the auxiliary groove F and the main groove E is 30-60 degrees.

Furthermore, the auxiliary grooves F penetrate through the main grooves E and extend outwards to form a plurality of parallel lines, the bionic pattern structure A-12 comprises a plurality of cat-claw-shaped patterns, the cat-claw-shaped patterns are uniformly distributed in the parallel lines, the cat-claw-shaped patterns are composed of a central ellipse A-121 and four identical auxiliary ellipses A-122, the long edge a2 of the central ellipse A-121 is 10-20mm, the short edge b2 of the central ellipse A-121 is 5-10mm, the long edge a1 of the auxiliary ellipses A-122 is 6-12mm, the short edge b1 of the auxiliary ellipses A-122 is 4-8mm, 4 auxiliary ellipses are uniformly distributed above the central ellipse, the distance between the centers of the four auxiliary ellipses A-122 and the center of the central ellipse is equal, namely, c1 c2 c3 c4 is 15-30mm, the distance between the centers of two adjacent auxiliary ellipses A-122 is equal, namely, the distance between the center of the two adjacent auxiliary ellipses A-122 is equal, namely, d1 d2 d3 is 10-20mm, and the included angle between the center of the first auxiliary ellipse α.

The wet-skid resistant foamed rubber unit A comprises the following components in parts by weight: 100 parts of (A); carbon black N220: 20-50 parts; stearic acid: 2-8 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 4-10 parts; foaming agent: 4-8 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts;

the high-wear-resistance rubber unit B comprises the following components in parts by weight: 100 parts of (A); high wear-resistant carbon black: 20-40 parts; white carbon black: 15-30 parts; silane coupling agent: 1.5-3 parts; stearic acid: 3-5 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 2-6 parts; high wear-resistant material: 2-6 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts;

the tear-resistant rubber unit C comprises the following components in parts by weight: 100 parts of (A); carbon black N330: 20-40 parts; white carbon black: 15-30 parts; silane coupling agent: 1.5-3 parts; stearic acid: 3-5 parts; antioxidant 4020: 3-5 parts; antiscorching agent CTP: 0.15-0.2 part; zinc oxide: 2-6 parts; tear-resistant materials: 2-6 parts; accelerator NOBS: 2-3 parts of a solvent; accelerator DTDM: 0.1-0.3 part; sulfur: 1-3 parts.

The high-wear-resistance rubber unit B is composed of nitrile rubber and butadiene rubber, wherein the nitrile rubber is NBR-4020D, and the butadiene rubber is BR9100, wherein the nitrile rubber accounts for 20-30% of the total mass, and the butadiene rubber accounts for 70-80% of the total mass. The high-wear-resistance material is composed of silicon nitride and aluminum oxide, wherein the silicon nitride is Si3N4, the aluminum oxide is AL2O3, the silicon nitride accounts for 13-23% of the total mass, and the aluminum oxide accounts for 77-87% of the total mass. The tear-resistant rubber unit C is composed of natural rubber and butadiene rubber, and the mass ratio of the natural rubber to the butadiene rubber is 15: 1. The tear-resistant material is composed of aramid fibers and carbon fibers, the length of the tear-resistant material is 20-30mm, and the mass ratio of the aramid fibers to the carbon fibers is 20: 1.

The application provides a preparation method of novel tread rubber with patterns, which comprises the following steps:

the first step, the preparation of the anti-slippery foam rubber unit A, the speed of the rotor of the internal mixer is controlled to be 40-80RPM, the temperature is controlled to be 130-150 ℃, and the upper plug pressure is controlled to be 30-50N/CM2, the specific process comprises the following steps:

(1) adding foamed rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant, the sulfur and the foaming agent, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 5-10mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

Secondly, preparing a high-abrasion-resistance rubber unit B, controlling the rotor speed of an internal mixer to be 40-80RPM, the temperature to be 130-150 ℃ and the upper plug pressure to be 30-50N/CM2, wherein the specific process comprises the following steps:

(1) adding wear-resistant rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant and the sulfur, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 5-10mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

The third step, preparing the tear-resistant rubber unit C, controlling the rotor speed of the internal mixer to be 40-80RPM, the temperature to be 130-150 ℃ and the upper plug pressure to be 30-50N/CM2, wherein the specific process comprises the following steps:

(1) adding tear-resistant rubber to press the top bolt, and plasticating in an internal mixer for 120-180 seconds;

(2) lifting the top plug, adding other materials except the accelerant and the sulfur, pressing the top plug and keeping for 120-180 seconds;

(3) and (3) after the prepared rubber compound is air-cooled for 1-2 hours, adding an accelerator NOBS and an accelerator DTDM into an open mill, and carrying out open milling for 8-15 times at the temperature of 55-75 ℃ of the open mill.

(4) And (3) after the prepared rubber compound is air-cooled for 2-4 hours, adding sulfur and a foaming agent into an open mill, wherein the temperature of the open mill is required to be 55-75 ℃, the open mill is opened for 8-15 times, the thickness of the formed rubber sheet is 2-6mm, and the rubber sheet is placed at room temperature for 12-24 hours for later use after being formed.

And step four, the anti-slippery foam rubber, the high-abrasion-resistance rubber and the anti-tearing rubber prepared in the steps one, two and three are combined in a compression molding mode according to the respective structural shapes, then the rubber is added into a mold to be pressurized to 5-20MP and heated to 130-150 ℃, and after 10-30 minutes, the rubber is cooled by water for 30 minutes to complete the preparation.